Processes in Microsoft 365 for setting up Office apps, redeeming product keys, and activating licenses.
Hi JoelKatz5
Thank you for coming back to forum. We also appreciate that you spent your precious time doing those tests.
According to your description, you have reinstalled MAU, however, you cannot open it via Word and you cannot find it under Help tab.
If so, generally, you can open Finder > locate the path /Library/Application Support/Microsoft/ to find the name like “MAU” or “MAU2.0” and open that directory, then you can check if you can find MAU application under this folder, if not, you may not find Check for Update option in Office applications.
So we want to confirm if you have installed MAU with the same steps above, if not, you can install MAU according to the steps we provided above in the first reply.
If the above suggestions don’t work for you, to better understand your situation and narrow down this issue, could you provide the information below?
You can open Finder > locate the path /Library/Application Support/Microsoft/ to find the name like “MAU” or “MAU2.0” and open that directory to check if you can find Microsoft AutoUpdate application.
Regards,
Stacey